Basic Geotechnical Earthquake Phần 3 docx

... follows: M 0 = µA f D (2 .3) M 0 = seismic moment (N.m) 30 Basic Geotechnical Earthquake Engineering 30 SEISMIC HAZARDS IN INDIA 3 CHAPTER 3. 1 INTRODUCTION Natural disasters like earthquake, landslide, ... the 28 Basic Geotechnical Earthquake Engineering Fig. 2.19 Acceleration, velocity and displacement versus time recorded during San Fernando earthquake (Courtesy: Day,...

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... Very sensitive clays may lose so 38 Basic Geotechnical Earthquake Engineering 38 DYNAMIC SOIL PROPERTIES 4 CHAPTER 4.1 INTRODUCTION This book is concerned with geotechnical problems associated ... sliding. 5 .3. 3 Earthquake Magnitude Design earthquake magnitude as well as the selection of magnitude level are discussed below: Design Earthquake Magnitude Engineers can define a...

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... horizontal acceleration due to earthquake exceeds a y . 100 Basic Geotechnical Earthquake Engineering at 3: 1 (horizontal:vertical). Total unit weight of slope material = 18.1 kN/m 3 . Using undrained shear ... strength 2.0 1.5 1.0 0.5 0 D r = 55 – 70% D r = 45 – 50% D r = 35 % σ′ v0 ≥ 3 tons/ft 2 0 0.1 0.2 0 .3 0.4 α K α 98 Basic Geotechnical Earthquake Engineering i...

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... E W 0 .33 3P H P e 0.667HP −+ = (33 600)(7) (0 .33 3)( 732 6)(20) = 4.82 Example 10 .3 Refer Fig. 10 .3. Soil behind and front of sheet pile is uniform sand with φ′ = 33 °, γ b = 64 lb/ft 3 and γ t = 130 ... overturning = a Hv E W 0 .33 3P H P e 0.667HP −+ = ()(.)(.)(.) (. )( . )() 35 2 8 37 5 1 5 0 33 3 49 12 4 + = 2 .35 (P v = 0, explained above and P E = 0 for static case)....

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... Eastern Region 32 3. 4 Frequency of Earthquake 34 3. 5 Earthquake Prediction 34 3. 6 Earthquake Hazard zonation, Risk Evaluation and Mitigation 35 3. 7 Earthquake Resistant Structures 36 3. 8 Awareness ... Seismic Waves 15 2 .3 Faults 17 2.4 Earthquake Magnitude and Intensity 22 2.5 Seismograph 26 3. SEISMIC HAZARDS IN INDIA 30 3. 1 Introduction 30 3. 2 Earthquake...

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... CA 17 14 6.64 10/28/ 83 Borah Peak, ID 33 20 6. 93 10/18/89 Loma Prieta, CA 40 16 6.92 06/28/92 Landers, CA 62 12 7 .34 Although the exact area associated with a given size earthquake varies from ... earthquakes. Table 2 .3: Fault dimensions and earthquakes (Courtesy: http://eqseis.geosc.psu.edu) Magnitude Fault Dimensions (Length × Depth, in km) 4.0 1.2 × 1.2 5.0 3. 3 × 3. 3 6.0 10 ×...

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... 0.4g Aa = 0.5g A 0.1 0.2 0 .3 0.4 0.5 B 0.12 0.24 0 .33 0.4 0.5 C 0.16 0.28 0 .36 0.44 0.5 D 0.25 0 .34 0 .36 0.46 SI A a = Effective peak acceleration SI = Site specific geotechnical investigation ... environments. 54 Basic Geotechnical Earthquake Engineering Selection of Design Earthquake The selection of a design earthquake may be based on: (a) Known design-level and maximum c...

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... pressures are determined as follows: 82 Basic Geotechnical Earthquake Engineering 7 .3 GRANULAR SOIL WITH EARTHQUAKE INDUCED PORE WATER PRESSURE Some times due to earthquake, granular soil doesn’t liquefy. ... induced by the design earthquake. Solution: Using results of Example 6.1, σ v0 = 58 + 20 = 78 kPa. σ v0 ′ = 43 + 20 = 63 kPa. Using Eq. (6.4), CSR = 0.65(0.96)(78/ 63) (0....

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... Paper 32 8. 31 3 -32 3. Gupta, H.K. 1999. Big quakes more a norm than exception. Times of India, September 19, 1999, P. 12. Iyengar, R. N., 1994, Earthquake History of South India, The Hindu, Jan. 23. Katsumi, ... often 132 Basic Geotechnical Earthquake Engineering 132 Acharrya, S.K. 1999. Natural Hazards: Earthquakes and Landslides in India during the nineties and mitigation st...

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... devices 43 Total stress analysis 62, 92, 93, 98 Transforms 12, 14 Transient dynamic phenomenon 39 , 40 U Ultimate bearing capacity 83 Ultimate limit state 116, 117, 118, 131 Ultimate load 79 134 Basic ... moduli 49 Dynamic soil properties 38 , 39 , 44 Dynamic Soil Properties 41, 43 Dynamic wall pressure 102 E Earthquake engineering 1, 2 Earthquake prediction 34 Earthquake sha...

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